Google's Angels Spread Their Wings

One of the most successful public offerings in the history of Silicon Valley, Google has made its employees extremely wealthy since going public six years ago. Now, about 50 current and ex-Googlers are helping finance a new generation of startups, 400 at last count. "When people write the history of Silicon Valley 20 years from now," says Paul Graham, who co-founded the startup incubator Y Combinator, "the true impact of Google could come more from all the things that Google people go on to do after they leave Google."